---
title: Evidence-based Wellness Education | Rachel B. Johnson, MS, CNS, LDN
description: Evidence-based nutrition science, peer-reviewed and free for everyone. An educational publication of Designs for Health.
---

An **educational publication of Designs for Health**

[For Practitioners →](https://www.designsforhealth.com)

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# Rachel B. Johnson, MS, CNS, LDN

 Articles written for CASI by Rachel B. Johnson, MS, CNS, LDN.

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[All Topics](https://www.casi.org/articles) [Science Update](https://www.casi.org/articles/tag/science-update) [Research & Education](https://www.casi.org/articles/tag/research-education) [Cardiovascular Health](https://www.casi.org/articles/tag/cardiovascular-health) [Microbiome](https://www.casi.org/articles/tag/microbiome) [Metabolic Health](https://www.casi.org/articles/tag/metabolic-health) [Immune Support](https://www.casi.org/articles/tag/immune-support) [Stress Resilience](https://www.casi.org/articles/tag/stress-resilience) [Oxidative Stress](https://www.casi.org/articles/tag/oxidative-stress)

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## Recent articles

### [![How Intestinal Permeability Impacts Inflammatory Responses and Cardiovascular Health](https://www.casi.org/hs-fs/hubfs/casi/featured/jan-29-intestinal-permeability.jpeg?width=960) Research & Education How Intestinal Permeability Impacts Inflammatory Responses and Cardiovascular Health Intestinal permeability lets microbial products like LPS enter circulation, driving inflammation linked to cardiovascular disease risk. Jan 29, 2026 Read →](https://www.casi.org/articles/intestinal-permeability-inflammatory-responses-cardiovascular-health)

### [![Methylation 101: What Is It and Why Does It Matter for Health?](https://www.casi.org/hs-fs/hubfs/casi/archive/dec-23-methylation-101.jpg?width=960) Research & Education Methylation 101: What Is It and Why Does It Matter for Health? Methylation relies on a coordinated network of B vitamins beyond B12 and MTHFR; synergistic B-complex support may help balance homocysteine metabolism. Dec 22, 2025 Read →](https://www.casi.org/articles/methylation-101-what-is-it-and-why-does-it-matter-for-health)

### [![Fiber 101: What It Is, How Much You Need, and Where to Get It](https://www.casi.org/hs-fs/hubfs/casi/featured/nov-25-fiber-101.jpeg?width=960) Research & Education Fiber 101: What It Is, How Much You Need, and Where to Get It Dietary fiber comes in soluble and insoluble forms that support cholesterol, blood sugar, and gut health, though most adults fall short of daily targets. Nov 25, 2025 Read →](https://www.casi.org/articles/fiber-101)

### [![Orexin, Circadian Timing, & Sleep Dynamics: Clinical Implications on HPA Activity](https://www.casi.org/hs-fs/hubfs/casi/featured/oct-21-orexin-circadian-timing.jpeg?width=960) Research & Education Orexin, Circadian Timing, & Sleep Dynamics: Clinical Implications on HPA Activity Orexin, a neuropeptide that governs wakefulness and circadian timing, links disrupted sleep to HPA axis overactivation and elevated cortisol. Oct 21, 2025 Read →](https://www.casi.org/articles/orexin-circadian-timing-sleep-dynamics-hpa-activity)

### [![The Citrus Polyphenol Advantage: Red Orange Complex™ for Skin, Hair, and Nails](https://www.casi.org/hs-fs/hubfs/casi/featured/adobestock_76458684.jpeg?width=960) Research & Education The Citrus Polyphenol Advantage: Red Orange Complex™ for Skin, Hair, and Nails Red Orange Complex, a standardized blood orange extract, has been shown in clinical trials to support skin hydration, elasticity, and photoprotection. Sep 25, 2025 Read →](https://www.casi.org/articles/citrus-polyphenol-red-orange-complex)

### [![GLP-1 Begins in the Gut: Clinical Clues From Microbiome Testing](https://www.casi.org/hs-fs/hubfs/casi/archive/aug-19-glp-gut.jpg?width=960) Research & Education GLP-1 Begins in the Gut: Clinical Clues From Microbiome Testing Gut bacteria shape GLP-1 secretion through short-chain fatty acids and bile acid signaling, and stool testing may reveal microbial clues to hormone output. Aug 19, 2025 Read →](https://www.casi.org/articles/glp-1-gut-microbiome-testing)

### [![Foundations of GLP-1 Support: Nutritional and Lifestyle Strategies for Healthy Glucose Metabolism](https://www.casi.org/hs-fs/hubfs/casi/archive/july-17-foundations-of-glp-1-support_5.jpg?width=960) Research & Education Foundations of GLP-1 Support: Nutritional and Lifestyle Strategies for Healthy Glucose Metabolism GLP-1 supports glucose regulation, and fiber-rich diets, probiotics, magnesium, and botanicals like berberine may support its natural production. Jul 17, 2025 Read →](https://www.casi.org/articles/foundations-of-glp-1-support-nutritional-and-lifestyle-strategies-for-healthy-glucose-metabolism)

### [![The Microbiome-Allergy Connection: Probiotics in Clinical Practice](https://www.casi.org/hs-fs/hubfs/casi/featured/july-8-the_microbiome-allergy-connection.jpeg?width=960) Research & Education The Microbiome-Allergy Connection: Probiotics in Clinical Practice Probiotic strains such as Lactobacillus, Bifidobacterium, and Bacillus may support immune tolerance and ease seasonal or environmental allergy symptoms. Jul 08, 2025 Read →](https://www.casi.org/articles/microbiome-allergy-connection-probiotics-in-clinical-practice)

### [![From Nature to Nutraceutical: Look Out for Adulteration in Herbal Supplements](https://www.casi.org/hs-fs/hubfs/casi/featured/june-24-from-nature-to-nutraceutical.jpeg?width=960) Research & Education From Nature to Nutraceutical: Look Out for Adulteration in Herbal Supplements Herbal supplements like black cohosh face frequent adulteration through species substitution and dilution, and cGMP testing helps verify quality. Jun 24, 2025 Read →](https://www.casi.org/articles/from-nature-to-nutraceutical-look-out-for-adulteration-in-herbal-supplements)

### [![The Hidden Connection Between Erectile Dysfunction and Antioxidant Status](https://www.casi.org/hs-fs/hubfs/casi/featured/65973ff2-5499-49ce-af3f-bbf57aabf3f9.jpg?width=960) Research & Education The Hidden Connection Between Erectile Dysfunction and Antioxidant Status Oxidative stress and endothelial dysfunction are closely tied to erectile dysfunction, and antioxidants like vitamin C and E may support vascular health. Jun 10, 2025 Read →](https://www.casi.org/articles/hidden-connection-between-erectile-dysfunction-and-antioxidant-status)

### [![Bridging Regeneration and Repair: The Critical Role of Stem and Progenitor Cells](https://www.casi.org/hs-fs/hubfs/casi/featured/may-27-bridging-regeneration-and-repair.jpeg?width=960) Research & Education Bridging Regeneration and Repair: The Critical Role of Stem and Progenitor Cells Stem and progenitor cells regenerate tissue, and endothelial progenitor cells specifically support vascular repair tied to cardiovascular disease risk. May 27, 2025 Read →](https://www.casi.org/articles/bridging-regeneration-repair-critical-role-stem-progenitor-cells)

‹ 1 [2](https://www.casi.org/articles/author/rachel-b-johnson-ms-cns-ldn/page/2) [›](https://www.casi.org/articles/author/rachel-b-johnson-ms-cns-ldn/page/2)

Most read this month

1. 01
   
   [Taurine and Glycine: The Benefits of Combining These Two Amino Acids](https://www.casi.org/articles/taurine-and-glycine-benefits-combining-amino-acids)
   
   Research & Education
2. 02
   
   [Magnesium Glycinate Chelate Buffered: A Smart Approach to Magnesium Supplementation](https://www.casi.org/articles/magnesium-glycinate-chelate-buffered-a-smart-approach-to-magnesium-supplementation)
   
   Research & Education
3. 03
   
   [Ubiquinone vs. Ubiquinol: Does the Form of CoQ10 Matter – Or Is Delivery the Real Key?](https://www.casi.org/articles/ubiquinone-ubiquinol-coq10-delivery)
   
   Research & Education
4. 04
   
   [The Latest Clinical Research on Zeolite and Heavy Metal Detoxification](https://www.casi.org/articles/latest-clinical-research-zeolite-heavy-metal-detoxification)
   
   Research & Education
5. 05
   
   [B Vitamins 101: Functions, Food Sources, and Daily Requirements](https://www.casi.org/articles/b-vitamins-101-functions-food-sources-and-daily-requirements)
   
   Research & Education

30+

Years of practitioner-grade nutrition science via Designs for Health

422

Articles, fully referenced to peer-reviewed primary literature

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An educational publication of [**Designs for Health**](https://www.designsforhealth.com). Peer-reviewed nutrition science, free for everyone.

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